KR20090092702A - Refrigerator and method for controlling the same - Google Patents

Abstract

A refrigerator and method for controlling the refrigerator are provided to place a large heater in the opening of refrigerator door and evenly maintain the temperature around the home bar. A refrigerator (1) comprises a heater, heater driving unit, sensor, and controller. The heater is placed at the frame of home bar door (103). The heater driving unit varies the voltage which is inputted to the heater. The sensing sensor senses the open of the home bar door.

Description

Refrigerator and method for controlling the same}

The present invention relates to a refrigerator and a method of controlling the refrigerator.

A refrigerator is a home appliance for storing food in a chilled or frozen state.

Recently, various types and types of refrigerators have been introduced, for example, a side by side type in which the refrigerating compartment and the freezer compartment are respectively disposed on the left and right sides, and a bottom freezer type and the refrigerating compartment in which the refrigerating compartment is provided above the freezer compartment, And top mount methods provided.

In addition, recently, many refrigerators to which a home bar structure is applied to draw out food or drink without opening a refrigerator compartment door have been released.

In detail, the home bar structure is a structure in which a home bar door is rotatably provided on a front surface of a door of a refrigerating compartment or a freezing compartment, and a home bar case is provided on a rear surface of the refrigerating compartment or a freezing compartment door.

The home bar structure as described above is very useful for the user to open or remove the home bar door as needed to withdraw or store food, especially drinks, etc. stored in the home bar case.

However, a phenomenon in which outside air flows into the refrigerator in the process of opening and closing the home bar door occurs. In particular, while the outside air and cold air contact with the edge of the home bar door, a phenomenon in which moisture contained in the outside air condenses near the edge of the home bar door occurs. In order to solve this problem, a separate heater is installed near the edge of the home bar door to prevent the condensate from binding.

On the other hand, in the conventional home bar door structure, in order to control the operation of the heater, an on / off switch capable of sensing a room temperature and turning the heater on or off according to the ambient temperature is applied.

However, according to the conventional home bar door heater control as described above, since the heater is always kept in the on state when the ambient temperature is above a certain temperature, there is a disadvantage in that power consumption increases. In addition, since it is impossible to adjust the magnitude of the voltage applied to the heater and only the heater on / off is possible, all of the voltages 220V drawn indoors in the on state are provided to the heater, causing unnecessary power consumption. .

On the other hand, due to the installation structure of the home bar door, the heat insulation effect is less at the lower end of the opening shielded by the home bar door. Therefore, the temperature is generally formed lower than other positions of the opening.

In detail, less heat insulator is inserted into the lower end of the opening in order to secure a space in which the home bar door is rotated. Therefore, the cool air inside the refrigerator tends to leak out through the lower end of the opening.

However, the conventional home bar heater is provided to be adjacent to the home bar door along a portion of the refrigerator door to supply a constant amount of heat. Therefore, there was a problem in which a particularly low temperature phenomenon appeared at the lower end of the opening among the peripheral positions of the opening in which the home bar door is installed.

In addition, due to the difference between the temperature of the lower end of the opening and the ambient temperature of the refrigerator, moisture in the air is condensed at the lower end of the opening, and condensed moisture forms in the refrigerator.

In this case, when the heat amount of the home bar heater is increased in order to increase the temperature of the lower end of the opening, more power is required than the required power, and the cost of using the power increases, and other parts of the opening, that is, the upper part and both sides There is a problem that the freezing efficiency inside the refrigerator is lowered as the temperature at the end is increased together.

An embodiment of the present invention has been proposed to solve the above problems, by improving the structure of the home bar heater provided in the home bar to ensure that the temperature around the home bar by the heater to be uniformly formed and the efficiency of the heater is increased The purpose is to provide.

In addition, it is an object to have a large number of heaters are arranged around the home bar door where the low temperature is formed to reduce the power consumption with uniform temperature formation around the home bar door.

In addition, an object of the present invention is to provide a method for controlling a home bar door heater that can reduce power consumption by enabling variable control of the voltage supplied to the home bar heater.

Refrigerator according to an embodiment of the present invention for achieving the above object, a heater provided in the edge portion of the home bar door;

A heater driver configured to vary a voltage input to the heater;

A detection sensor detecting whether the home bar door is opened; and

A control unit for receiving an opening signal of the home bar door from the detection sensor, and transmits an operation signal to the heater driver.

According to an embodiment of the present invention, a refrigerator includes: a main body part in which a cold air storage compartment is formed; A refrigerator door rotatably coupled to the main body; And a home bar provided in the refrigerator door and having an opening formed therein, wherein the home bar includes: a home bar door configured to selectively shield the opening; A home bar frame in close contact with the home bar door when the home bar door is closed; And a heater provided to the home bar frame to supply heat and arranged at one side of the home bar frame.

In addition, the control method of the refrigerator according to an embodiment of the present invention, the home bar heater is turned on by the basic input voltage; Detecting whether the home bar door is opened or closed; and varying an input voltage according to whether the home bar door is opened or closed or opening time of the home bar door.

According to the present invention according to the above configuration, with respect to the opening of the refrigerator door in which the home bar door is installed, in particular, the heater having a large capacity is arranged at the lower end of the opening so that the temperature around the home bar can be uniformly formed. have.

Therefore, it is not necessary to increase the amount of heat generated in the entire heater in order to uniformly form the temperature around the home bar, thereby reducing the power consumption required.

In addition, it is possible to control the voltage supplied to the home bar heater, thereby reducing the power consumption for driving the home bar heater.

In detail, the voltage supplied to the home bar heater is adjustable according to whether the home bar door is opened and the opening time, thereby minimizing power consumption.

1 is a perspective view of a refrigerator equipped with a home bar according to an embodiment of the present invention.

2 is a side cross-sectional view of the refrigerator.

3 is a cross-sectional view taken along the line II ′ of FIG. 1, illustrating a home bar heater according to a first embodiment of the present invention.

4 is a cross-sectional view showing a configuration of a home bar heater according to a second embodiment of the present invention.

5 is a cross-sectional view showing a configuration of a home bar heater according to a third exemplary embodiment of the present invention.

Figure 6 is a block diagram showing a home bar heater control system of a refrigerator according to an embodiment of the present invention.

FIG. 7 is a diagram illustrating a case in which a voltage input in a home bar heater control system according to an exemplary embodiment of the present invention is varied in stages. FIG.

8 is a flowchart illustrating a method of controlling a home bar heater according to opening of a home bar door.

Hereinafter, with reference to the drawings will be described a specific embodiment of the present invention. However, the spirit of the present invention is not limited to the embodiments presented, and those skilled in the art who understand the spirit of the present invention can easily suggest other embodiments within the scope of the same idea.

1 is a perspective view of a refrigerator equipped with a home bar according to an exemplary embodiment of the present invention, and FIG. 2 is a side cross-sectional view of the refrigerator.

1 and 2, the refrigerator 1 according to an embodiment of the present invention includes a main body 10 having a refrigerating compartment 17 and a freezing compartment (not shown) therein, and a freezing compartment door that opens and closes the freezing compartment. (11), a refrigerating compartment door 12 for opening and closing the refrigerating compartment 17, a machine compartment 20 formed on the rear surface of the main body 10, and a compressor 19 accommodated in the machine compartment 20. Included. In addition, an evaporator 21 is mounted on the rear surface of the main body 10 to allow cold air to be supplied to the refrigerating chamber 17 or the freezing chamber.

In detail, the refrigerator 18 is provided with a shelf 18 and a storage box 22 for storing food, and a shelf or other storage box having the same function in the freezer compartment. In addition, a plurality of door baskets 131 may be mounted on the rear surface of the refrigerating compartment door 12.

In addition, the refrigerator compartment door 12 is provided with a home bar structure 100, so that the user can store or withdraw beverage or drinking water without opening the refrigerator compartment door 12. In addition, the home bar 100 may be mounted on the freezing compartment door 11 and may be mounted on both the refrigerating compartment door 12 and the freezing compartment door 11.

Meanwhile, an ice maker may be provided inside the freezer compartment, and a dispenser 14 for taking out ice is provided on the front side of the freezer compartment 11 to take out ice without opening the freezer compartment door 11. In addition, the dispenser 14 may be provided with a water outlet for water extraction.

In detail, the home bar structure 100 includes a home bar door 103 rotatably provided at the refrigerating compartment door 12, a home bar case 152 provided at a rear surface of the refrigerating compartment door 12, and the refrigerating compartment door ( A home bar cover 153 that can selectively open and close the home bar case 152 in the open state 12 is included. In addition, an opening 101 for accommodating the home bar door 103 is formed in the refrigerating compartment door 13, and a home bar heater 120 is mounted at an edge portion of the opening 101. The home bar heater 120 heats a portion between the home bar door 103 and the opening 101 in a state where the home bar door 103 is closed to prevent condensate from being generated. In addition, a groove bar frame 102 forming an outer appearance of the groove bar 100 is mounted at the edge of the opening 101.

Here, although the opening 101 and the groove bar frame 102 are named as functionally divided as the configuration of the groove bar 100, the opening 101 is actually formed in at least a portion of the refrigerating compartment door 12, the groove bar The frame 102 may be referred to as a part of the refrigerating compartment door 12.

In addition, a home bar door liner 104 is formed on the rear surface of the home bar door 103. In addition, the home bar door liner 104 is formed such that the inside of the refrigerator may be sealed in contact with the home bar frame 102 while the home bar door 103 shields the opening 101.

In addition, the home bar door 103 is rotatably coupled around the lower end of the home bar 100, that is, the hinge part 107. Here, the hinge part 107 may be provided in the refrigerating compartment door 12, and may be disposed at both sides of the lower end of the opening 101.

In addition, a latch member 106 is provided at an inner upper portion of the home bar door 103 to fix the home bar door 103 to the home bar frame 102 in a state where the home bar door 103 shields the opening 101.

In addition, the home bar frame 102 is provided with a latch assembly 105 which is engaged with the latch member 126 in a state where the home bar door 123 is closed.

Here, when the home bar door 103 is closed, the latch member 106 is inserted into the latch assembly 105 so that the latch member 106 maintains the closed state of the home bar door 103. In addition, a pressing part (not shown) capable of pressing a user to open the home bar door 103 is provided on the front surface of the home bar door 103. Therefore, the latch member 106 may be referred to as an element of the "opening and closing device" for opening and closing the home bar door 103 together with the pressing part.

In addition, the front of the home bar frame 102, the inside of the refrigerator to be sealed in contact with the back surface of the home bar door 103 in a state in which the home bar door 103 is closed, so that cold air inside the refrigerator is prevented from leaking. A gasket 108 is provided.

Hereinafter, the configuration of the home bar heater 120 will be described with reference to the drawings.

3 is a cross-sectional view taken along the line II ′ of FIG. 1, illustrating a home bar heater according to a first embodiment of the present invention.

Referring to FIG. 3, the home bar heater 120 according to the first embodiment of the present invention may be installed in the home bar frame 102. In addition, an inside of the home bar frame 102 may include a heat insulating material for insulating the inside and the outside of the refrigerator.

In detail, the home bar heater 120 is disposed along the circumference of the opening 101. The home bar heater 120 includes an upper end 121 disposed above the opening 101 and an extension extending from the upper end 121 and disposed on at least one of left and right sides of the opening 101. One side end portion 122, the lower end portion 123 extending from the first side end portion 122 and disposed below the opening portion 101, and extending from the lower end portion 123, and the opening portion 101. The second side end portion 124 is disposed on at least the other side of the left and right of the.

Here, the second side end portion 124 may be disposed on an opposite side of the first side end portion 122 with respect to the opening 101.

In addition, heaters may be arranged in one row on the upper end 121 and the side ends 122 and 124. On the other hand, the lower end 123, the heater may be arranged in a plurality of rows, that is, multiple stages. That is, the lower end portion 123 may be arranged in a zigzag shape from the lower side toward the lower side of the opening 101.

This is because the lower part of the groove bar frame 102 is insulated by the heat insulating material compared to other parts.

Specifically, the home bar door 103 is hinged to the lower portion of the home bar frame 102. In addition, a relatively small amount of heat insulating material is inserted into the lower portion of the home bar frame 102 to secure a space for the home bar door 103 to rotate.

Therefore, the cold air inside the refrigerator tends to leak out of the lower portion of the home bar frame 102, and thus the lower portion of the home bar frame 102 is formed at a lower temperature than other portions. As a result, the lower portion of the groove bar frame 102, the greater the possibility of condensation of water in the air is formed.

In summary, the home bar heater 120 may be provided in a plurality of rows so that a large amount of heat is supplied to the lower portion of the home bar frame 102. That is, the home bar heater 120 may be arranged in a greater amount in a lower side than the other side of the home bar frame 102.

In more detail, at the lower end 123 of the home bar heater 120, heaters are arranged in a plurality of layers.

The lower end portion 123 is arranged in a zigzag shape in a horizontal direction, and a plurality of bent portions 123a are formed in at least a portion of the lower end portion 123 so that the heaters are arranged in a plurality of rows. Each heater may be arranged in a state spaced apart from each other by a predetermined distance.

As described above, since the heaters are arranged in a plurality of rows in the lower end portion 123, the amount of heat generated by the heaters is increased, thereby increasing the degree of heating the refrigerator door. As a result, the lower part of the groove bar frame 102 in which the relatively low temperature is formed may be raised to a temperature similar to the other part, that is, the upper part and the side part of the groove bar frame 102.

Here, the number of heat of the heaters arranged in the lower end 123 may be determined by comparing the difference between the lower temperature of the home bar frame 102 and the temperature of the other part of the home bar frame 102.

One side of the lower end 123 is connected to one side of the first side end 122, and the other side of the lower end 123 is connected to one side of the second side end 124. That is, the side ends 122 and 124 and the lower end 123 may be integrally formed.

Although the side ends 122 and 124 and the upper end 121 are illustrated in one row in the drawing, a smaller number of heaters than the lower end 123 may be arranged in a row.

That is, fewer side heaters may be arranged in the side ends 122 and 124 and the upper end 121 than the lower end 123.

On the other hand, the home bar heater 120 may be connected to a control unit (not shown) to control the operation of the home bar heater 120. In detail, one side of the upper end 121 and one side of the second side end 124 may be connected to the controller.

In addition, the home bar heater 120 may be supplied with power while a refrigerator power is applied.

On the contrary, the home bar heater 120 is provided only when a temperature sensor for measuring the temperature inside the refrigerator is provided inside the refrigerator and the temperature measured by the temperature sensor is compared with a temperature outside the refrigerator. May be configured to operate.

Hereinafter, the configuration of the home bar heater according to the second and third embodiments of the present invention will be described with reference to the drawings. However, since the second and third embodiments differ only in the shape and structure of the home bar heater compared to the first embodiment, only the differences will be described, and the same reference numerals are used to describe the first embodiment. .

4 is a cross-sectional view illustrating a configuration of a home bar heater according to a second exemplary embodiment of the present invention.

Referring to FIG. 4, the home bar heater 220 according to the second embodiment of the present invention may be installed in the home bar frame 102.

In detail, the home bar heater 220 is disposed along the circumference of the opening 101. The home bar heater 220 includes an upper end portion 221 disposed above the opening portion 101 and an upper end portion 221 extending from the upper end portion 221 and disposed on at least one of left and right sides of the opening portion 101. One side end portion 222, extending from the first side end portion 222, a lower end portion 223 disposed below the opening portion 101, and extending from the lower end portion 223, the opening portion 101. The second side end portion 224 is disposed on at least the other side of the left and right of the.

Here, the second side end portion 224 may be disposed on an opposite side of the first side end portion 222 with respect to the opening 101.

In addition, heaters may be arranged in one row on the upper end portion 221 and the side end portions 222 and 224. On the other hand, the lower end 223, the heater may be arranged in a plurality of rows. Therefore, a lower amount of heat may be supplied to the lower portion of the home bar frame 102 by a heater than other portions.

More specifically, the lower end portion 223 of the home bar heater 220 includes a left portion 223a and a right portion 223b provided to be symmetrical with respect to the center portion of the lower end portion 223. In addition, the rows of the heaters arranged in the left portion 223a and the right portion 223b may be arranged in a state spaced apart from each other by a predetermined distance.

When the heater is arranged as described above, there is an advantage that the length of the heater can be reduced while providing a large amount of heat.

In addition, since the heaters are arranged in a plurality of rows at the lower end portion 223, the amount of heat generated by the heaters is increased, thereby increasing the degree of heating the refrigerator door. As a result, the lower part of the groove bar frame 102 in which the relatively low temperature is formed may be raised to a temperature similar to that of other parts.

Here, the number of heat of the heaters arranged in the lower end 223 may be determined by comparing the difference between the lower temperature of the home bar frame 102 and the temperature of the other part of the home bar frame 102.

On the other hand, the home bar heater 220 may be connected to a control unit (not shown) to control the operation of the home bar heater 220. Specifically, one side of the upper end portion 221 and one side of the second side end portion 224 may be connected to the controller.

5 is a cross-sectional view illustrating a configuration of a home bar heater according to a third exemplary embodiment of the present invention.

Referring to FIG. 5, the home bar heater 320 according to the third embodiment of the present invention may be installed in the home bar frame 102.

In detail, the home bar heater 320 is disposed along the circumference of the opening 101. In addition, the home bar heater 320 extends from the first side end portion 321 disposed on the right side of the opening portion 101 and the first side end portion 321 and is disposed above the opening portion 101. An upper end portion 322, a second side end portion 323 extending from the upper end portion 322 and disposed on the left side of the opening portion 101, and extending from the second side end portion 323, and the opening portion 101. It includes a lower end 324 disposed below.

Here, one side of the first side end portion 321 is connected to a control unit for controlling the home bar heater 320. In addition, one side of the lower end 324 is also connected to the control unit. That is, the home bar heater 320 is connected to the control unit through one side of the first side end portion 321, extends from the first side end portion 321 to the lower end portion 324, and then the lower end portion 324. Through one side of) can be connected to the control unit again.

In addition, one side of the first side end portion 321 and one side of the lower end portion 324 may be connected to the controller through a wire (not shown).

On the other hand, the lower end portion 324, the heater is arranged in a plurality of rows.

That is, heaters may be arranged in one row on the upper end portion 322 and the side end portions 321 and 323. On the other hand, the lower end 324, the heater may be arranged in a plurality of rows. Therefore, a lower amount of heat may be supplied to the lower portion of the home bar frame 102 by a heater than other portions.

Of course, heaters may also be arranged in a plurality of rows in the upper end portion 322 and the side end portions 321 and 323. However, even at this time, the heaters of the lower end portion 324 will be arranged in a greater number than the heaters of the upper end portion 321 and the side end portions 321 and 323.

As a result, the lower end portion 324 has a large degree of heating the refrigerator door by a heater arranged in a plurality of rows. As a result, the lower part of the groove bar frame 102 in which the relatively low temperature is formed can be raised to a temperature similar to that of other parts.

Table 1

division Conventional Home Bar Heater First embodiment Second embodiment Third embodiment Freezer home bar 1110 mm 0.0050W / mm 1,700 0.0027 1,465 0.0031 1,390 0.0033 Cold Room Home Bar 1280 mm 0.0059W / mm 2,020 0.0021 1,855 0.0023 1,680 0.0025

Table 1 will be described. The values in Table 1 show the conventional home bar heaters and the amount of heat consumed per unit length and the lengths of heaters required for the heater arrangement of each of the above embodiments.

In the case of a conventional home bar heater, first, a 1110 mm heater is installed in a freezer compartment home bar, and a calorific value of 0.0050 W / mm is generated per unit length, so that a total of 5.5 W of heat is consumed. In addition, a heater is installed in the refrigerating chamber home bar, and a heat amount of 0.0059W / mm is generated per unit length, so that a total of 7.6W of heat is consumed.

On the other hand, in the case of disposing a heater as in the first embodiment, first, the heater is installed in the freezer compartment home bar, and the heat of 0.0027 W / mm is generated per unit length, so that a total of 4.6 W of heat is consumed. In addition, a heater is installed in the refrigerating chamber home bar, and a heat quantity of 0.0021 W / mm is generated per unit length, so that a total of 4.2 W of heat is consumed.

In addition, in the case of disposing the heater as in the second embodiment, first, the heater is installed in the freezer compartment home bar, and 1,465 mm is installed. In addition, a 1855 mm heater is installed in the refrigerating chamber home bar, and a calorific value of 0.0023 W / mm is generated per unit length, so that a total of 4.2 W of heat is consumed.

In addition, in the case of disposing the heater as in the third embodiment, first, the heater is installed in the freezer compartment home bar, and 1,390 mm is installed. In addition, 1680 mm heater is installed in the refrigerating chamber home bar, and a calorific value of 0.0025 W / mm is generated per unit length, so that a total of 4.2 W is consumed.

As described above, when the heaters are arranged as in the above-described embodiment, it can be seen that the total amount of heat consumed, that is, power consumption, is reduced as compared with the case where the conventional home bar heater is installed.

That is, the conventional heater requires a large amount of heat per unit length in order to match the lower end temperature of the home bar frame to the required level, while the heater of the present invention is disposed in a plurality of rows at the lower end where a large amount of heat is required, It can be seen that a large amount of heat can be supplied to the lower end even with a small amount of heat.

The home bar heater 120 operates according to a room temperature of a space in which the refrigerator 1 is installed or whether the home bar door 103 is opened, and the home bar heater 120 is controlled by a control unit. The voltage applied to) is adjusted variably.

A control device and a control method for controlling the operation of the home bar heater 120 will be described in more detail below with reference to the accompanying drawings.

6 is a block diagram illustrating a home bar heater control system of a refrigerator according to an embodiment of the present invention.

Referring to FIG. 6, a home bar heater control system of a refrigerator according to an exemplary embodiment of the present invention includes a power supply unit 1200 to which an AC source is supplied, and a zero voltage of power supplied from the power supply unit 1200. A zero voltage detector 1100 for detecting a temperature, a controller 1000 receiving a detection signal from the zero voltage detector 1100, and an ambient temperature sensor 1300 for detecting a temperature of a space in which the refrigerator 1 is installed. ), A home bar door opening detection sensor 1600 for detecting whether the home bar door 103 is opened, a heater driver 1500 for controlling driving of the home bar heater 120, and the control unit 1000. In addition, the memory 1400 may store data about an applied voltage value according to the ambient temperature.

In detail, the controller receives the zero voltage detection signal transmitted from the zero voltage detection unit 1100 and controls the voltage to be input to the heater driver 1500 after a predetermined time elapses from the zero voltage time point. The controller 1000 receives an input voltage value corresponding to the temperature value transmitted from the ambient temperature sensor 1300 from the memory 1400, and then a voltage corresponding to the transmitted input voltage value is the heater driver. The control is input to 1500.

Alternatively, the control unit 1000 receives a detection signal transmitted from the home bar door opening detection sensor 1600, and receives an input voltage value according to whether the home bar door 103 is opened or the opening time of the heater driving unit 1500. To send. Then, the heater driver 1500 controls the on-time of the home bar heater 120 to increase the input voltage.

In addition, the heater driving unit 1500 has conventionally used a relay means for performing only the on / off operation, in the present invention, not only the voltage can be input to the home bar heater 120 variably, but also with the on / off function It is characterized by applying a feasible semiconductor switch element. The heater driver 1500 corresponding to the semiconductor switch device as described above includes a triac or a thyristor. That is, when using the semiconductor switch element, it is possible to easily change the voltage applied amount in accordance with the ambient temperature. In addition, the voltage applied to the home bar heater 120 may be varied by varying the voltage application time point through the zero voltage detector 1100.

FIG. 7 is a diagram illustrating a case in which a voltage input in a home bar heater control system according to an exemplary embodiment of the present invention is varied step by step.

Referring to FIG. 7, a commercial voltage 220V having an alternating current type is applied through the power supply unit 1200.

In detail, in the case of using a conventional relay, a commercial voltage of 220 V is continuously input when the relay is turned on, and voltage application is stopped when the relay is turned off.

However, according to the heater driving unit of the semiconductor switch type according to the present invention, the duty time of the heater driving unit can be appropriately adjusted according to the ambient temperature, so that the applied voltage can be varied. In addition, even when there is no change in the ambient temperature, the duty time of the heater driving unit may be appropriately adjusted according to whether the home bar door 103 is opened or opened so that the applied voltage may be varied.

In detail, the on-time (duty II) of the heater driving unit becomes longer when the voltage application time is earlier than the zero-voltage time detected by the zero-voltage detecting unit, and the on-time (duty I) of the heater driving unit is delayed when the voltage application time is delayed. Will be shorter. That is, as the on time increases or decreases, the input voltage increases or decreases by ΔV.

By controlling the length of the on-time of the heater driving unit as described above, the driving of the home bar heater 120 can be controlled according to the ambient temperature or whether the home bar door 103 is opened. It can prevent the moisture from getting cold. In addition, the power consumption for driving the home bar heater 120 is reduced.

8 is a flowchart illustrating a method of controlling a home bar heater according to opening of a home bar door.

Referring to FIG. 8, when power is applied to the refrigerator 1, a basic input voltage is applied to the home bar heater 120 to turn on the home bar heater 120 (S11). Here, the basic input voltage refers to a used voltage reduced as the commercial voltage of 220V passes through the transformer (or inverter).

In detail, the control unit 1000 detects whether the home bar door 103 is opened while the refrigerator 1 is being driven (S12). Then, the time is counted from the moment when the home bar door 103 is opened (S13). In addition, when the home bar door 103 is detected by the control unit 1000 (S14), and the home bar door 103 is determined to be closed, the time count is stopped (S15).

Meanwhile, the voltage increase ΔV is determined according to whether or not the home bar door 103 is opened, so that the voltage is increased as the voltage increase is added to the basic input voltage V (S16).

Here, the voltage increase is tabled in the memory 1400, and the controller 1000 uploads data stored in the memory 1400 to compare and determine the respective values. In addition, the voltage increase may cause a certain amount of voltage increase to be added every time the home bar door 103 is opened and closed, and the voltage increase may be set according to the time when the home bar door 103 is opened. In other words, the time when the home bar door 103 is opened may be counted so that the voltage increase according to the open time is added.

In addition, in order to increase the input voltage, it is possible by appropriately adjusting the on-time of the heater driving unit 1500 as shown in FIG.

On the other hand, when the heater input voltage is increased, the count for calculating the opening time of the home bar door 103 is initialized (S17). In addition, the controller 1000 determines whether the increased input voltage reaches the upper limit (S18). In other words, the voltage input to the home bar heater 120 has a maximum value of 220V and a minimum value of 0V. Therefore, when the value obtained by adding the voltage increase to the previous input voltage value becomes more than the commercial voltage 220V, the input voltage is maintained at the upper limit value (S19). After the set time has elapsed (S20), the input voltage value is returned to the basic input voltage (S23). When the set time has not elapsed, it is determined whether the home bar door 103 is reopened by the controller 1000 (S21).

In detail, when the home bar door is reopened in a state in which the set time is not reached, the processes S13 to 18 are repeatedly performed. In addition, the time at which the increased voltage is input is made to be the value obtained by adding the newly set time to the previous set time (S25). On the contrary, when there is no reopening of the home bar door, the home bar heater 120 is driven at an increased input voltage (S22).

On the other hand, when the voltage returns to the basic input voltage after the set time, the controller 1000 determines whether the power-off signal of the refrigerator 1 is input (S26), and determines that the refrigerator 1 is being driven. If the above process (step S12 or less) is repeated.

By the control method as described above, the voltage supplied to the home bar heater 120 is variably controlled according to the temperature change around the refrigerator, and the input voltage increases according to whether the home bar door 103 is opened even when the ambient temperature is constant. By doing so, power consumption due to the home bar heater 120 may be minimized. And while minimizing power consumption, it is possible to effectively prevent the phenomenon that the moisture is filled near the edge of the home bar door 103.

In the above, various embodiments of the home bar heater and the method of controlling the home bar heater are disclosed. It is understood that the scope of the present invention is included in the scope of the present invention as well as the embodiments embodied by the combination of the respective embodiments as well as the respective embodiments presented. For example, it should be noted that new embodiments in which the control method of the home bar heater is combined with each embodiment of the above-described home bar heater structure are also included in the scope of the present invention.

Claims (23)

A heater provided at an edge of the home bar door; A heater driver configured to vary a voltage input to the heater; A detection sensor detecting whether the home bar door is opened; and And a controller configured to receive an opening signal of the home bar door from the detection sensor and transmit an operation signal to the heater driver. The method of claim 1, The heater driving unit is a refrigerator, characterized in that the semiconductor switch element to enable variable control of the input voltage. The method of claim 1, The heater driving unit, the refrigerator comprises a triac or thyristor. The method of claim 1, And a voltage input to the heater driving unit is changed according to whether the home bar door detected by the detection sensor is opened. The method of claim 1, The refrigerator, characterized in that the voltage input to the heater driving unit is variable according to the opening time of the home bar door. Turning on the home bar heater by the basic input voltage; Detecting whether the home bar door is opened or closed; and And controlling the input voltage according to whether the home bar door is opened or closed or opening time of the home bar door. The method of claim 6, And when the home bar door is opened, the voltage input to the home bar heater is increased by a predetermined amount. The method of claim 6, The control method of the refrigerator, characterized in that the increase of the voltage input to the home bar heater is set differently according to the opening time of the home bar door. The method according to claim 7 or 8, The control method of the refrigerator, characterized in that to return to the basic input voltage when the voltage input to the home bar heater is increased and the set time elapses. The method according to claim 7 or 8, When the voltage input to the home bar heater is increased and the home bar door is re-opened before the set time has elapsed, the control method of the refrigerator, characterized in that a voltage added with a new voltage increase is input to the home bar heater. . The method of claim 10, If the re-opening and closing of the door is made before the set time elapses, the time when the newly increased input voltage is supplied, the control method of the refrigerator, characterized in that the new set time is added to the previous set time. A main body portion in which a cold air storage compartment is formed; A refrigerator door rotatably coupled to the main body; And A home bar provided in the refrigerator door and having an opening formed therein; In the home bar, A home bar door to selectively shield the opening; A home bar frame in close contact with the home bar door when the home bar door is closed; And And a heater provided to the home bar frame to supply heat and arranged at one side of the home bar frame. The method of claim 12, The heater is a refrigerator characterized in that the multi-stage arranged on the lower side of the home bar frame. The method of claim 13, The upper side of the home bar frame, characterized in that the heater is arranged less than the lower side of the home bar frame. The method of claim 13, And at least one side of the left side and the right side of the home bar frame has a smaller amount of heaters than the bottom side of the home bar frame. The method of claim 12, The home bar door is hinged to the lower side of the home bar frame, The heater includes a top end and a side end portion arranged in a row, and a lower end extended from the side end portion and arranged in multiple stages. The method of claim 16, The lower end of the refrigerator, characterized in that arranged in a zigzag shape toward the bottom. The method of claim 16, At the lower end, And a left side and a right side provided to be symmetrical with respect to the center of the lower end. The method of claim 18, And a row of heaters arranged in the left part and the right part are spaced apart from each other by a predetermined distance. The method of claim 1, The heater is disposed along the circumference of the home bar frame, the one end and the other end of the heater, characterized in that connected to the control unit for controlling the heater, respectively. The method of claim 12, The heater is characterized in that the one side of the opening is arranged so that more heat is generated than the other side. The method of claim 12, The heater is arranged in at least one row along the circumference of the opening, the refrigerator is arranged in a plurality of rows below the opening. The method of claim 12, And the heater is arranged longer in the lower side of the home bar frame than in the upper and left and right sides of the home bar frame.